Falhas do tipo CWE-122

3.694 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2026-31402CRITICALnfsd: fix heap overflow in NFSv4.0 LOCK replay cacheEPSS 1.2%CVE-2020-25667—TIFFGetProfiles() in /coders/tiff.c calls strstr() which causes a large out-of-bounds read when it searches for `"dc:format=\"image/dng\"` wEPSS 1.2%CVE-2022-40660HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 1.2%CVE-2022-0570HIGHHeap-based Buffer Overflow in mruby/mrubyEPSS 1.2%CVE-2020-27829—A heap based buffer overflow in coders/tiff.c may result in program crash and denial of service in ImageMagick before 7.0.10-45.EPSS 1.2%CVE-2023-2804MEDIUMA heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrgext.c file. The vulneEPSS 1.2%CVE-2024-7272MEDIUMFFmpeg swresample.c fill_audiodata heap-based overflowEPSS 1.2%CVE-2026-93479CRITICALNGINX map directive and regex matching vulnerabilityEPSS 1.2%CVE-2022-24672HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF644Cdw 10.02 EPSS 1.2%CVE-2025-21186HIGHMicrosoft Access Remote Code Execution VulnerabilityEPSS 1.2%CVE-2023-21799HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.2%CVE-2025-21417HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.2%CVE-2024-4559HIGHHeap buffer overflow in WebAudio in Google Chrome prior to 124.0.6367.155 allowed a remote attacker to potentially exploit heap corruption vEPSS 1.2%CVE-2023-24897HIGH.NET, .NET Framework, and Visual Studio Remote Code Execution VulnerabilityEPSS 1.2%CVE-2022-1286MEDIUMheap-buffer-overflow in mrb_vm_exec in mruby/mruby in mruby/mrubyEPSS 1.2%CVE-2022-43591HIGHA buffer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can triggEPSS 1.2%CVE-2022-20737HIGHCisco Adaptive Security Appliance Software Clientless SSL VPN Heap Overflow VulnerabilityEPSS 1.2%CVE-2020-13494MEDIUMA heap overflow vulnerability exists in the Pixar OpenUSD 20.05 parsing of compressed string tokens in binary USD files. A specially craftedEPSS 1.2%CVE-2024-30074HIGHWindows Link Layer Topology Discovery Protocol Remote Code Execution VulnerabilityEPSS 1.2%CVE-2022-0676HIGHHeap-based Buffer Overflow in radareorg/radare2EPSS 1.2%